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Old 12-21-2010, 04:16 PM
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Default fan speed

One of the fan speeds for my heat stopped working the other day. The other 3 work fine though. Any idea's what would cause this, or how I go about fixin it?
Old 12-21-2010, 04:41 PM
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most likely a bad switch in the dash
Old 12-21-2010, 04:42 PM
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Prob the blower motor resistor.
Old 12-21-2010, 04:43 PM
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Originally Posted by FriscoCHL
Prob the blower motor resistor.
isnt that the switch?
Old 12-21-2010, 05:21 PM
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Originally Posted by FriscoCHL
Prob the blower motor resistor.
x2. They go out. Could be the switch, but unlikely. It's easy to diagnose though, if you have a basic understanding of how to use a VOM. Sometimes the resistors can be diagnosed by eye - it will look burned.
Old 12-21-2010, 05:33 PM
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Originally Posted by blasto9000
x2. They go out. Could be the switch, but unlikely. It's easy to diagnose though, if you have a basic understanding of how to use a VOM. Sometimes the resistors can be diagnosed by eye - it will look burned.
X3. Do not touch it when it is hot though.
Old 12-21-2010, 07:59 PM
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Where is the blower motor resistor located? I need to replace mine as I have no fan speeds (believe it is running on low if at all). Bought the new resistor the other day, is it just under the dash as it is in a lot of vehicles?
Old 12-21-2010, 11:16 PM
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Also like to know where this resistor is
Old 12-21-2010, 11:41 PM
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its under the passenger side dash. its a black oval type thing with 2 screws and a 4 prong plug.

Your problem could be anything though..

I've been trying to get help on my heat issue since I bought the jeep a year ago, no luck so far. Just replaced the resistor again with a brand new one. Today it worked when heated up but then stopped next time I started it cold.

Read the last post in this thread.
https://www.cherokeeforum.com/f2/ple...comment-69108/
Old 12-22-2010, 02:22 AM
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Originally Posted by darknezz
its under the passenger side dash. its a black oval type thing with 2 screws and a 4 prong plug.

Your problem could be anything though..

I've been trying to get help on my heat issue since I bought the jeep a year ago, no luck so far. Just replaced the resistor again with a brand new one. Today it worked when heated up but then stopped next time I started it cold.

Read the last post in this thread.
https://www.cherokeeforum.com/f2/ple...comment-69108/
xjs have a common problem with melting the plug on the control switch on the dash
Old 12-22-2010, 08:18 AM
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Its your resistor... but resistors go bad because the blower motor over heated it... so u have to replace them both... under pass side dash... 2 to 3 wire plug probly...
Old 12-26-2010, 05:47 PM
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My heater control switch now only works in position 4 does this mean the module under the dash needs to be replaced ?
Old 12-26-2010, 05:59 PM
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Originally Posted by freegdr
xjs have a common problem with melting the plug on the control switch on the dash
Ok so where do you get a new plug? And how do you install it?
Old 12-26-2010, 07:04 PM
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Originally Posted by rfsparkz
My heater control switch now only works in position 4 does this mean the module under the dash needs to be replaced ?
means u need a new blower resistor AND a new blower motor...

Originally Posted by muffinman
Ok so where do you get a new plug? And how do you install it?
junkyard and have to plice it on if the plug is melted...
Old 01-19-2011, 11:41 PM
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I replaced the switch and that fixed the problem. Switch was all burnt up, aswell the plug was melted a bit :S. switch was 18$ straight from the dealership


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